This would be a great wiki page ;-) On Jun 13, 2012, at 2:46 PM, Daniel Pittman wrote: > On Wed, Jun 13, 2012 at 1:32 PM, Peter Meier <peter.me...@immerda.ch> wrote: >> >>> Actually, this is a group where y'all probably *can* deliver on >>> this request: >>> >>> If you are experiencing poor performance, it would be awesome if >>> you could generate some profiling data for us. >>> >>> perftools.rb is the nicest profiler for Ruby I have found, and if >>> y'all could install it, grab a sample of the system while it is >>> being slow, and give us the data that would be awesome. >> >> I can do that. What would be helpful is to get a step by step >> description on how to do that. Otherwise, I need more time to figure >> that out and I will probably send you the right thing in the first place. > > It is pretty simple: `gem install perftools.rb` - once that completes > successfully, generate the profile: > > env CPUPROFILE=/tmp/puppet-agent.profile \ > CPUPROFILE_REALTIME=1 \ > CPUPROFILE_FREQUENCY=500 \ > RUBYOPT="-r`gem which perftools | tail -1`" = > /usr/bin/puppet ... > > Then you can generate a report - which needs graphviz and ps2pdf (or > ghostscript) with: > > pprof.rb --pdf /tmp/puppet-agent.profile > puppet-agent.pdf > pprof.rb --callgrind /tmp/puppet-agent.profile > puppet-agent.grind > > The will show the details of where wall-time was spent. The PDF is > immediately useful. The callgrind report is useful for investigation > with kcachegrind or qcachegrind, which we have here. > > The 'CPUPROFILE' variable sets where the output goes; that is the > input for pprof.rb reporting. > -- > Daniel Pittman > ⎋ Puppet Labs Developer – http://puppetlabs.com > ♲ Made with 100 percent post-consumer electrons > > -- > You received this message because you are subscribed to the Google Groups > "Puppet Developers" group. > To post to this group, send email to puppet-dev@googlegroups.com. > To unsubscribe from this group, send email to > puppet-dev+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/puppet-dev?hl=en. >
-- Jo Rhett Net Consonance : net philanthropy to improve open source and internet projects. -- You received this message because you are subscribed to the Google Groups "Puppet Developers" group. To post to this group, send email to puppet-dev@googlegroups.com. To unsubscribe from this group, send email to puppet-dev+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/puppet-dev?hl=en.
